Perhaps you should try some spelling variations:
changes made » changes a, changes due
zhang jun » zhang jin, zhang jian, zhang jing
tan yong » tan hong, tan kong, tan yang
tan ying » fan ying, ran ying, tan yang
jun chen » jui chen, yun chen, jane chen
yang jui » yang judy, yang xi
yang yi » yang xi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tan yong) or (tan ying)) zhang jun chen ((yang di) or (((yang jui) or (yang yi)))) changes made ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tan yong) OR (tan ying)) zhang jun chen ((yang di) OR (((yang jui) OR (yang yi)))) changes made ;.
• Adding a wildcard symbol may retrieve word variants: ((tan yong) or (tan ying)) zhang jun chen ((yang di) or (((yang jui) or (yang yi)))) changes made ;*.